ECOLOGY OF ISLE ROY ALE. 273 



mens in the clearing about Neutson's Resort (IV, 5) on July 21 (G. 

 121). 



Geographic Range.— Michigan (Isle Royale only) ; Great Slave Lake; 

 Mackenzie Basin; British Columbia; Montana; Colorado; Nevada; Cali- 

 fornia. Of. Elrod, '06, p. 136; Carey, '06, p. 451. Isle Royale is also 

 the most eastern record for this species. 



Hesperidae. 



Amhlyscirtes vlalis Edw. Vialis Skipper. Three specimens of this 

 skipper were taken on July 11 (G. 49), 22 (G. 133), and 28 (G. 179) 

 in the clearing about the Light-house (I, 7). 



Geographic Range. Quebec; Maine; New Hampshire to Florida and 

 westward to Texas; Nevada; Alberta; Manitoba (Fletcher), and 

 British Columbia. 



Geographic Notes. After the preceeding geographic records had been 

 secured, the following notes on the distribution of butterflies in Can- 

 ada were received from Dr. James Fletcher, of Ottawa, Canada. His 

 letter contains so many interesting features that I have thought it de- 

 sirable, with Dr. Fletcher's consent, to publish it in full, supplementary 

 to the data, already given, rather than to scatter the records. 



"In just running through your letter I see that I can answer it with- 

 out turning up any records. The geographical range in Canada of the 

 following butterflies is as follows: Papilio glawni^ turnus — from "the 

 Atlantic to the prairie region, common; across the prairies into British 

 Columbia, rather scarce, and not to my knowledge crossing the interior 

 elevated plateau which is a semi-arid region. North of this in the moun- 

 tains it reaches right to the Pacific Coast. South of the north part of 

 Vancouver Island its place is taken by Pap. eurymedon and P. rutulus 

 arizonensis as named by Mr. W. H. Edwards. 



"Golias philodioe — very abundant from the Atlantic to the Lake 

 Superior region, where its place is taken by C. eurytheme, of which one 

 form, the variety eriphyle resembles philodice very closely and although 

 it is claimed that it is a form of eutytheme it resembles philodice so 

 closely that it cannot always be separated unless the locality is known. 



"Argynnis atlantis — this occurs in what we consider the typical form 

 from the Atlantic coast to the Great Lakes. West of that the black 

 markings are rather lighter and the color is brighter. In the Rocky 

 Mountains I believe what we have been calling electa is merely a form 

 of atlmvtis. That at any rate extends to the main chain of the 

 Rockies, but I have never seen it further west than the Arrow Lakes. 



"BrenthAs myrina and hellona — from Atlantic Coast to the interior 

 plateau of British Columbia. 



"P. tha/ros — from the Atlantic Coast to British Columbia, running 

 north to the coast, probably with the main chain of the Rockies. In 

 Vancouver Island and the Fraser River Valley its place is taken by P. 

 pratensis and the same areas are inhabited by Brenthis epithore in 

 place of bellona. Pratensis however extends west into Manitoba. 



"Eugonia j-albwm, E. antiopa, A. milberti, V. atalanta and V. oardui 

 occur over the whole of our country from Atlantic to Pacific and from 

 the southern border to the arctic regions. 

 36 



